 direct methods

fishery independent research surveys used to estimate abundance and collect other biological data. Aims to avoid biases found in commercial catch data
Dictionary of ichthyology. 2009.
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Direct methods (crystallography) — In crystallography, direct methods are a family of methods for estimating the phases of the Fourier transform of the scattering density from the corresponding magnitudes. The methods generally exploit constraints or statistical correlations… … Wikipedia
Direct lobbying in the United States — are direct methods used by lobbyists to influence United States legislative bodies. Interest groups from many sectors spend billions of dollars on lobbying. There are three lobbying laws in the U.S. They require that a lobbying entity must be… … Wikipedia
Direct method — may refer to Direct method (education) for learning a foreign language Direct method (computational mathematics) as opposed to iterative method Direct methods (crystallography) for estimating the phases of the Fourier transform of the scattering… … Wikipedia
Methods of contour integration — Not to be confused with Line integral. In the mathematical field of complex analysis, contour integration is a method of evaluating certain integrals along paths in the complex plane.[1][2][3] Contour integration is closely related to the… … Wikipedia
Direct method in the calculus of variations — In the calculus of variations, a topic in mathematics, the direct method is a general method for constructing a proof of the existence of a minimizer for a given functional,[1] introduced by Zaremba and David Hilbert around 1900. The method… … Wikipedia
Direct Method — A method of creating a statement of cash flows during a given reporting period. The method uses actual cash flow information from the company s operations segment, instead of using accrual accounting values. Under both the direct and indirect… … Investment dictionary
Direct Cinema — is a documentary genre that originated between 1958 and 1962 in North America, principally in the Canadian province of Quebec and the United States. Similar in many respects to the cinéma vérité genre, it was characterized initially by filmmakers … Wikipedia
Direct digital manufacturing — Direct digital manufacturing, sometimes called additive, rapid, direct, instant, or on demand manufacturing, is a manufacturing process which creates physical parts directly from 3D CAD files or data using computer controlled additive and… … Wikipedia
Direct Part Marking — (DPM) is a process to permanently mark parts with a barcode. This is done to allow the tracking of parts through the full life cycle.The interpretation of permanent often depends on the context the part is used. In the aerospace industry an… … Wikipedia
Direct mail — Direct mail, also known as junk mail, advertising mail or admail, is the delivery of advertising material to recipients of postal mail. It forms a significant subdiscipline of direct marketing. Some organizations attempt to help people opt out of … Wikipedia